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    1   /* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 4.1 */
    2   /* JavaCCOptions: */
    3   package net.sourceforge.pmd.lang.ast;
    4
    5   /** Token Manager Error. */
    6   public class TokenMgrError extends RuntimeException
    7   {
    8
    9      /*
    10      * Ordinals for various reasons why an Error of this type can be thrown.
    11      */
    12
    13     /**
    14      * Lexical error occurred.
    15      */
    16     public static final int LEXICAL_ERROR = 0;
    17
    18     /**
    19      * An attempt was made to create a second instance of a static token manager.
    20      */
    21     public static final int STATIC_LEXER_ERROR = 1;
    22
    23     /**
    24      * Tried to change to an invalid lexical state.
    25      */
    26     public static final int INVALID_LEXICAL_STATE = 2;
    27
    28     /**
    29      * Detected (and bailed out of) an infinite loop in the token manager.
    30      */
    31     public static final int LOOP_DETECTED = 3;
    32
    33     /**
    34      * Indicates the reason why the exception is thrown. It will have
    35      * one of the above 4 values.
    36      */
    37     int errorCode;
    38
    39     /**
    40      * Replaces unprintable characters by their escaped (or unicode escaped)
    41      * equivalents in the given string
    42      */
    43     protected static final String addEscapes(String str) {
    44        StringBuffer retval = new StringBuffer();
    45        char ch;
    46        for (int i = 0; i < str.length(); i++) {
    47          switch (str.charAt(i))
    48          {
    49             case 0 :
    50                continue;
    51             case '\b':
    52                retval.append("\\b");
    53                continue;
    54             case '\t':
    55                retval.append("\\t");
    56                continue;
    57             case '\n':
    58                retval.append("\\n");
    59                continue;
    60             case '\f':
    61                retval.append("\\f");
    62                continue;
    63             case '\r':
    64                retval.append("\\r");
    65                continue;
    66             case '\"':
    67                retval.append("\\\"");
    68                continue;
    69             case '\'':
    70                retval.append("\\\'");
    71                continue;
    72             case '\\':
    73                retval.append("\\\\");
    74                continue;
    75             default:
    76                if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
    77                   String s = "0000" + Integer.toString(ch, 16);
    78                   retval.append("\\u" + s.substring(s.length() - 4, s.length()));
    79                } else {
    80                   retval.append(ch);
    81                }
    82                continue;
    83          }
    84        }
    85        return retval.toString();
    86     }
    87
    88     /**
    89      * Returns a detailed message for the Error when it is thrown by the
    90      * token manager to indicate a lexical error.
    91      * Parameters :
    92      *    EOFSeen     : indicates if EOF caused the lexical error
    93      *    curLexState : lexical state in which this error occurred
    94      *    errorLine   : line number when the error occurred
    95      *    errorColumn : column number when the error occurred
    96      *    errorAfter  : prefix that was seen before this error occurred
    97      *    curchar     : the offending character
    98      * Note: You can customize the lexical error message by modifying this method.
    99      */
    100    protected static String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) {
    101       return("Lexical error in file " + AbstractTokenManager.getFileName() + " at line " +
    102            errorLine + ", column " +
    103            errorColumn + ".  Encountered: " +
    104            (EOFSeen ? "<EOF> " : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int)curChar + "), ") +
    105            "after : \"" + addEscapes(errorAfter) + "\"");
    106    }
    107
    108    /**
    109     * You can also modify the body of this method to customize your error messages.
    110     * For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not
    111     * of end-users concern, so you can return something like :
    112     *
    113     *     "Internal Error : Please file a bug report .... "
    114     *
    115     * from this method for such cases in the release version of your parser.
    116     */
    117    public String getMessage() {
    118       return super.getMessage();
    119    }
    120
    121    /*
    122     * Constructors of various flavors follow.
    123     */
    124
    125    /** No arg constructor. */
    126    public TokenMgrError() {
    127    }
    128
    129    /** Constructor with message and reason. */
    130    public TokenMgrError(String message, int reason) {
    131       super(message);
    132       errorCode = reason;
    133    }
    134
    135    /** Full Constructor. */
    136    public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) {
    137       this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);
    138    }
    139 }
    140 /* JavaCC - OriginalChecksum=887ef629387efaf1cf31f0dc7c077049 (do not edit this line) */